Read Sharp LC-20A2E (serv.man3) Service Manual online
17
LC-20A2E
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
CHASSIS LAYOUT
MAIN Unit
18
LC-20A2E
INVERTER Unit
SUB Unit
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
19
LC-20A2E
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
TUNER Unit
SWITCH Unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
A
B
C
D
E
F
G
H
I
J
LC-20A2E
LC-20A2E
BLOCK DIAGRAMS
LAMP
T7751~T7756
DC/AC
TRANCE
LAMP ERROR
DET
L_ERR
COMMON DRIVE
IC1109
CSCOM
LCD
PANEL
V0,V16,V32
V48,V64
DAC
IC1101
MP_CLK, MPDA, DAC1CS
CS
GRADUATION
POWER FOR
LCD
IC1102~IC1108, IC1110
R0~R5, G0~G5, B0~B5, CK
FRONT SPEAKER
L/R
FLSP
FRSP
GCK
PA VCC
AUDIO
AMPLIFER
IC3305
PA DC13V
ANALOG MULTIPLEXER
IC1205
L/R
REVERSE
IC303
FIFO
IC1202
LPF
IC903
AUDIO
AMPLIFER
IC304
LCD
CONTROLLER
IC1201
OFL1
DC/AC
INVERTER
DRIVE
Q3603
Q7751~Q7755
INV VCC
INV
DC13V
KEY
REMOTE CONTROL
RECEIVER
RESET
IC2002
CS
E
2
PROM
IC2004
I
2
C
I
2
C
I
2
C
I
2
C
MICON
IC2001
MP_CLK, MPDA, DAC1CS
CONTROL SIGNAL
LLC1, LLC2, FIELD
VSY
HSY
UV0~UV7, VP_Y0~VP_Y7
DACM_L/R
DACA_L/R
MSP
IC901
VPC
IC801
HSY
ANALOG
SWITCH
IC2007
HSY2
HD
CSYNC
+5V
+31V
+14V
+8V
+38V
+16V
+9V
+5V
-8V
+3.3V
+3.3V REG
IC752
IC201
Q204
Q202
Q203
+5V REG IC751
DC/DC
T701
PWM
IC702
INV DC 13V
PA DC 13V
PA VCC
INV VCC
SIG VCC
DC 13V
OSD
I
2
C bus
S INPUT
AV2 INPUT
AV1
INPUT/
OUTPUT
TUNER
INPUT
HEAD PHONE
OUTPUT
AV
OUTPUT
P901
OSDHD
SCL, SDA
V1 SC
V1 V
DY
V1 L/R
V2 VO
V2 LO/RO
V2 V
V2 L/R
TV V
SIF
SC2 OUT L/R
DACA_L/R
P2003
SC2001
OSDVD
OSDR, OSDG, OSDB
SUBCLK, SUBIN, SUBOUT, M/S IN, M/S OUT
SC801
CSYNC
SYNC SEPARATE
IC401
SC
AV3
VO
AV2
AV1
BUFFER
IC902
TV/AV
SELECTION
IC402
I
2
C
Ë
MAIN BLOCK DIAGRAM
20~21
